Fibromyalgia (FM) is a common, complex and chronic condition of unknown etiology (Carette 1994). It is characterized by widespread musculoskeletal pain, multiple tender points, fatigue and a range of other symptoms (Wolfe 1990). FM accounts for 15% of rheumatology consultations, with a prevalence of 2% in the general population (3.4% in females and 0.5% in males), rising to 7% in the elderly females (Wolfe 1995). Disability levels in social and work roles, as well as use of medical care, is high. Current treatment options often meet with limited success.